
/*
*Released on 28th June 2008.
*Any violations can be reported at paritosh@wikiocean.net
*What is treated as violations can be found at www.wikiocean.net/ppl1-voilations*
******************************************************************************
* The contents of this file are subject to POOL Public License 1.0 and later.
* POOL Public License is based on Affero GPL v3 and additional conditions.
* ("License"); You may not use this file except in compliance with the License
* You may obtain a copy of the Affero GPL v3 License at http://www.gnu.org/licenses/agpl.html
* You may obtain a copy of the POOL Public License 1.0 or later at www.wikiocean.net/license/ppl.html
* Software distributed under POOL Public License 1.0 is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
* the specific language governing rights and limitations under the License.
* The Initial Developer of the Original Code is Paritosh Pungaliya (C) 2008. All Rights Reserved.
******************************************************************************
* Objective of the additional terms (license)
* 1) Is to extend the software freedom to freedom to work.
* 2) To ensure that knowledge is free from monopoly of agencies.
* 3) To avoid a situation where big corporate or investor can buy out free software groups and companies and then start milking the communities built around it.
* (this trend can be seen how the freedom is curtailed in companies that get Venture Capital funding.)
******************************************************************************
*/

package  dataMigration;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Statement;

import logger.PoolLogger;
import dbmanager.DBManager;


public class Migrate 
{
	String _query;
	Statement sourceStatement; 
	Statement targetStatement;
	DBconnect sourceDB;
	DBconnect targetDB;

	ResultSet rs;
	String tablename;
	int columnCount;
	PoolLogger pl;
	
	public Migrate() {
		// logger
		pl = (PoolLogger) PoolLogger.getLogger(this.getClass().getName());
	}
	public void setSourceDBconnect(DBconnect sourceDB)
	{
		this.sourceDB = sourceDB;
	}
	public void setTargetDBconnect(DBconnect targetDB)
	{
		this.targetDB = targetDB;
	}
	public void setTableName(String tablename) {
		this.tablename = tablename;
	}
	public void createTeable()
	{
		
		Connection con = sourceDB.getConnect();
		
		String createQuery = "CREATE TABLE "+tablename+"(";
		sourceStatement = sourceDB.getStatement(con);
		try 
		{
			rs = sourceStatement.executeQuery("select * from "+tablename);
			rs.next();
			ResultSetMetaData rsMetaData = rs.getMetaData();
			columnCount = rsMetaData.getColumnCount();
			for(int i=1;i<=columnCount;i++)
			{
				String col = rsMetaData.getColumnName(i);
				String type = rsMetaData.getColumnTypeName(i);
				createQuery = createQuery + col + " " + type + "," ;
			}
			
			createQuery = createQuery.substring(0,createQuery.length()-1);
			createQuery = createQuery + ")";
			rs.previous();
		}
		catch (SQLException e) {
			e.printStackTrace();
		}
		
		//Create Table 
		
		con = targetDB.getConnect();
		targetStatement = targetDB.getStatement(con);
		
		try 
		{
			System.out.println(createQuery);
			pl.info(createQuery);
			pl.debug(createQuery);
			pl.warn(createQuery);
			pl.fatal(createQuery);
			pl.error(createQuery);
			pl.trace(createQuery);
			targetStatement.execute(createQuery);
			
		} catch (SQLException e) {
			e.printStackTrace();
		}
		
		
	}
	
	public boolean inserData()
	{
		
		try 
		{
			while(rs.next())
			{
				try {
					String stmt = "insert into "+tablename+" values(";
					for (int i=1; i<= columnCount;i++)
					{
						try
						{
							String value = rs.getString(i);
							if(value.contains("\'"))
								value = value.replace("\'", "\\\'");
							if(!value.equalsIgnoreCase("null"))
								stmt =stmt + "'" + value + "'" + ",";
							else
								stmt =stmt + value + ",";
						}
						catch (Exception e) {
							stmt =stmt + null + ",";
						}
					}
					stmt = stmt.substring(0,stmt.length()-1) + ")";
					System.out.println(stmt);
					pl.info(stmt);
					pl.debug(stmt);
					pl.warn(stmt);
					pl.fatal(stmt);
					pl.error(stmt);
					pl.trace(stmt);
					targetStatement.executeUpdate(stmt);
				} catch (Exception e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
			return true;
		} catch (SQLException e) {
			e.printStackTrace();
		}
		return false;
	}
	
}
